EP 0362050 A3 19910403 - MEMORY CARD
Title (en)
MEMORY CARD
Publication
Application
Priority
JP 24295088 A 19880928
Abstract (en)
[origin: EP0362050A2] A memory card is used on a card write and/or read apparatus which has a data bus with an arbitrary bit width and writes and/or reads a datum to and/or from the memory card. The memory card comprises a data input/output terminal (5, 21, 62a, 62b), a memory part (1, 12, 13, M0-M7) having a data bus with a bit width of at least n bits for coupling to the data bus of the card write and/or read apparatus via the data input/output terminal, an address input terminal (2, 16, 70) for receiving an address signal, a first input terminal (7, 19, 66) for receiving a first chip select signal which selects a first byte, a second input terminal (8, 20, 65) for receiving a second chip select signal which selects a second byte, and a decoder circuit (9, 15, 61) for determining a bit width of the data bus of the memory part to be used for data communication between the card write and/or read apparatus to one of n bits and n/N bits based on the first and second chip select signals and one or a plurality of arbitrary bits of the address signal by supplying control signals to the memory part, where n, N and n/N are positive integers.
IPC 1-7
IPC 8 full level
G06F 12/00 (2006.01); G06F 12/04 (2006.01); G06F 12/06 (2006.01); G06F 13/16 (2006.01); G06K 7/00 (2006.01); G06K 19/07 (2006.01)
CPC (source: EP KR US)
G06K 7/0008 (2013.01 - EP KR US); G06K 19/07 (2013.01 - EP KR US)
Citation (search report)
- [E] FR 2635892 A1 19900302 - MITSUBISHI ELECTRIC CORP [JP]
- [A] GB 2021823 A 19791205 - INTEL CORP
- [A] US 4309754 A 19820105 - DINWIDDIE JR JOHN M
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0362050 A2 19900404; EP 0362050 A3 19910403; EP 0362050 B1 19941117; DE 68919402 D1 19941222; DE 68919402 T2 19950330; JP 2539012 B2 19961002; JP H0290344 A 19900329; KR 900005328 A 19900414; KR 930011349 B1 19931130; US 5025415 A 19910618
DOCDB simple family (application)
EP 89402634 A 19890926; DE 68919402 T 19890926; JP 24295088 A 19880928; KR 890013959 A 19890928; US 41207789 A 19890925